refactor: replace custom CRM with Monica fork

database/migrations/2020_04_24_185810_remove_duplicate_currency.php

@@ -0,0 +1,37 @@
+<?php
+
+use App\Models\User\User;
+use App\Models\Settings\Currency;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Database\Migrations\Migration;
+
+class RemoveDuplicateCurrency extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $doubleCurrency = DB::table('currencies')
+            ->select(DB::raw('max(id) as id'), 'iso')
+            ->groupBy('iso')
+            ->havingRaw('count(*) > ?', [1])
+            ->get();
+
+        foreach ($doubleCurrency as $currency) {
+            $newCurrency = Currency::where('iso', $currency->iso)->first();
+
+            User::where('currency_id', $currency->id)->chunk(500, function ($users) use ($newCurrency) {
+                foreach ($users as $user) {
+                    $user->update([
+                        'currency_id' => $newCurrency->id,
+                    ]);
+                }
+            });
+
+            Currency::find($currency->id)->delete();
+        }
+    }
+}